The Beagle 2 mission to Mars
The failed attempt to search for signs of life on Mars was due to land on the red planet on Christmas Day 2003 - but the Beagle 2 lander couldn't be found.
On Christmas Day 2003, a British spacecraft was due to land on Mars and begin searching for signs of life. The late Professor Colin Pillinger was the man behind the mission, his daughter Shusanah spoke to Rob Walker about Beagle 2 in 2015. This programme is a rebroadcast.
Photo:Lead scientist Colin Pillinger poses with a model of Beagle 2 in November 2003. (Credit: Scott Barbour/Getty Images)